Google Project Shield Promises DDoS Attack Prevention

Project Shield service is designed to keep static websites for human rights, election and news groups online, but it might presage a commercial Google DDoS defense service.

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Can Google's new Project Shield save the world from packet storms, zombie PCs, low-orbit ion cannons or Armageddon attacks?

Not yet. But Google's latest endeavor, sounding a bit like a Marvel Comics creation, can provide distributed denial of service (DDoS) protection for static Web pages.

"Project Shield is an initiative to expand Google's own distributed denial of service (DDoS) mitigation capabilities to protect free expression online," says Google's related service page. "The service currently combines Google's DDoS mitigation technologies and Page Speed Service to allow websites to serve their content through Google's own infrastructure for DDoS mitigation."

The effort is currently invitation only, although Google is soliciting "trusted testers" to help it get the service up and running, provided they hail from the domains of "news, human rights or elections-related content."

The DDoS attack defense is offered via Page Speed Service, which according to a related FAQ "is an online service to automatically speed up loading of your web pages." According to Google, the service "fetches content from your servers, rewrites your pages by applying Web performance best practices and serves them to end users via Google's servers across the globe."

This level of global distribution also provides protection against some types of DDoS attacks, although the company cautioned that it's not foolproof. "Google has designed its infrastructure to defend itself from quite large attacks and this initiative is aimed at providing a similar level of protection to third-party websites," it said.

Google said that Page Speed Service and Project Shield are currently free, but if that changes it will give users at least 30 days' notice. If it does begin to charge, Google hopes to offer discounted or free subscriptions for charities and non-profits.

Speaking by phone, Shuman Ghosemajumder, VP of strategy for automated attack defense firm Shape Security and formerly the head of Google's efforts to combat click fraud, lauded the new service. "Project Shield is a great initiative that I think is going to really make a difference for free speech online," he said. "When you're looking at websites that provide that type of information, it's typically static website content, and that's what Project Shield is designed for."

"But if you're a bank, trading website or social network -- anything that requires database-driven, real-time dynamic interaction -- that's not what Project Shield is designed for," Ghosemajumder said, noting that he wasn't involved in the development of Google's DDoS defenses.

Of course, there's nothing to stop Google from one day ramping up its service to the point where it can defend database-driven sites, and compete with current DDoS defense service providers. In fact, Matthew Prince, CEO of DDoS attack mitigation firm CloudFlare, has been predicting that will happen, and that Google might gobble up rivals in the process.

"The challenges that websites face in both performance and security are substantial so it's inevitable there will be a consolidation of the edge of the network," Prince told the Register. "In the future, there will likely be two to six companies that run the edge of the Web. We've been predicting for some time those companies will be Akamai, Amazon, CloudFlare, and Google."

Published: 2015-03-31The build_index_from_tree function in index.py in Dulwich before 0.9.9 allows remote attackers to execute arbitrary code via a commit with a directory path starting with .git/, which is not properly handled when checking out a working tree.